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Definition
| A solid, liquid or gas forming a solution in a solvent |
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| The solid that dissolves in a solvent into a solution |
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| The liquid that the solute dissolves into |
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| A mixture with a solute dissolved in a solution |
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| Something that will dissolve |
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| Something that won't dissolve |
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| Is sodium Chloride soluble? |
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Definition
| Yes, but ionic bonds aren't normally |
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Definition
| The decomposition of compounds using electricity |
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| An anode is the positive electrode |
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| The solution which contains the dissolved compound which is decomposed. |
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| The positive ions which migrate to the cathode |
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| The negative ions which migrate to the positive electrode (anode) |
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| Which electrode do metals go to and why? |
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Definition
| They go to the cathode as they are positive ions |
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| What is the flow of electricity? |
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| Reduction is the gain of electrons |
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| What type of equations do you use to show the movement of electrons? |
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| What happens at the cathode in electrolysis? |
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Definition
| Electrons arrive at the cathode (negative electrode) from the power suppluy, this gives it a negative charge and so attracts the cations (positive ions), the cations then take up the electrons to form atoms (not ions) This is a form of a reduction reaction |
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| What happens at the anode in electrolysis? |
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Definition
| Electrons need to be given back to the circuit in order to make it complete. The positive charge attracts the anions (negative ions) which give their electrons to the circuit and become atoms. This is an oxidation reaction |
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| Why doesn't solid copper chloride conduct electricity? |
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Definition
| The ions cannot move around when solid so needs to be aqueous |
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